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Differential D9894 Diff 25996 sys/netinet/tcp_stacks/fastpath.c

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sys/netinet/tcp_stacks/fastpath.c

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VNET_DECLARE(int, tcp_do_rfc3042); VNET_DECLARE(int, tcp_do_rfc3042);
#define V_tcp_do_rfc3042 VNET(tcp_do_rfc3042) #define V_tcp_do_rfc3042 VNET(tcp_do_rfc3042)
VNET_DECLARE(int, tcp_do_autorcvbuf); VNET_DECLARE(int, tcp_do_autorcvbuf);
#define V_tcp_do_autorcvbuf VNET(tcp_do_autorcvbuf) #define V_tcp_do_autorcvbuf VNET(tcp_do_autorcvbuf)
VNET_DECLARE(int, tcp_insecure_rst); VNET_DECLARE(int, tcp_insecure_rst);
#define V_tcp_insecure_rst VNET(tcp_insecure_rst) #define V_tcp_insecure_rst VNET(tcp_insecure_rst)
VNET_DECLARE(int, tcp_insecure_syn); VNET_DECLARE(int, tcp_insecure_syn);
#define V_tcp_insecure_syn VNET(tcp_insecure_syn) #define V_tcp_insecure_syn VNET(tcp_insecure_syn)
VNET_DECLARE(int, drop_synfin);
#define V_drop_synfin VNET(drop_synfin)
static void tcp_do_segment_fastslow(struct mbuf *, struct tcphdr *, static void tcp_do_segment_fastslow(struct mbuf *, struct tcphdr *,
struct socket *, struct tcpcb *, int, int, uint8_t, struct socket *, struct tcpcb *, int, int, uint8_t,
int); int);
static void tcp_do_segment_fastack(struct mbuf *, struct tcphdr *, static void tcp_do_segment_fastack(struct mbuf *, struct tcphdr *,
struct socket *, struct tcpcb *, int, int, uint8_t, struct socket *, struct tcpcb *, int, int, uint8_t,
int); int);
▲ Show 20 Lines • Show All 1,639 Lines • ▼ Show 20 Linestcp_do_segment_fastslow(struct mbuf *m, struct tcphdr *th, struct socket *so,
uint32_t tiwin; uint32_t tiwin;
char *s; char *s;
uint16_t nsegs; uint16_t nsegs;
int can_enter; int can_enter;
struct in_conninfo *inc; struct in_conninfo *inc;
struct tcpopt to; struct tcpopt to;
thflags = th->th_flags; thflags = th->th_flags;
tp->sackhint.last_sack_ack = 0;
inc = &tp->t_inpcb->inp_inc; inc = &tp->t_inpcb->inp_inc;
nsegs = max(1, m->m_pkthdr.lro_nsegs); nsegs = max(1, m->m_pkthdr.lro_nsegs);
/* /*
* If this is either a state-changing packet or current state isn't * If this is either a state-changing packet or current state isn't
* established, we require a write lock on tcbinfo. Otherwise, we * established, we require a write lock on tcbinfo. Otherwise, we
* allow the tcbinfo to be in either alocked or unlocked, as the * allow the tcbinfo to be in either alocked or unlocked, as the
* caller may have unnecessarily acquired a write lock due to a race. * caller may have unnecessarily acquired a write lock due to a race.
*/ */
Show All 14 Lines
#endif #endif
} }
INP_WLOCK_ASSERT(tp->t_inpcb); INP_WLOCK_ASSERT(tp->t_inpcb);
KASSERT(tp->t_state > TCPS_LISTEN, ("%s: TCPS_LISTEN", KASSERT(tp->t_state > TCPS_LISTEN, ("%s: TCPS_LISTEN",
__func__)); __func__));
KASSERT(tp->t_state != TCPS_TIME_WAIT, ("%s: TCPS_TIME_WAIT", KASSERT(tp->t_state != TCPS_TIME_WAIT, ("%s: TCPS_TIME_WAIT",
__func__)); __func__));
if (thflags & TH_SYN && thflags & TH_FIN && V_drop_synfin) {
if ((s = tcp_log_addrs(inc, th, NULL, NULL))) {
log(LOG_DEBUG, "%s; %s: "
"SYN|FIN segment ignored (based on "
"sysctl setting)\n", s, __func__);
free(s, M_TCPLOG);
}
if (ti_locked == TI_RLOCKED) {
INP_INFO_RUNLOCK(&V_tcbinfo);
}
INP_WUNLOCK(tp->t_inpcb);
m_freem(m);
return;
}
tp->sackhint.last_sack_ack = 0;
/* /*
* Segment received on connection. * Segment received on connection.
* Reset idle time and keep-alive timer. * Reset idle time and keep-alive timer.
* XXX: This should be done after segment * XXX: This should be done after segment
* validation to ignore broken/spoofed segs. * validation to ignore broken/spoofed segs.
*/ */
tp->t_rcvtime = ticks; tp->t_rcvtime = ticks;
▲ Show 20 Lines • Show All 399 Lines • ▼ Show 20 Lines
{ {
int thflags; int thflags;
uint32_t tiwin; uint32_t tiwin;
char *s; char *s;
struct in_conninfo *inc; struct in_conninfo *inc;
struct tcpopt to; struct tcpopt to;
thflags = th->th_flags; thflags = th->th_flags;
tp->sackhint.last_sack_ack = 0;
inc = &tp->t_inpcb->inp_inc; inc = &tp->t_inpcb->inp_inc;
/* /*
* If this is either a state-changing packet or current state isn't * If this is either a state-changing packet or current state isn't
* established, we require a write lock on tcbinfo. Otherwise, we * established, we require a write lock on tcbinfo. Otherwise, we
* allow the tcbinfo to be in either alocked or unlocked, as the * allow the tcbinfo to be in either alocked or unlocked, as the
* caller may have unnecessarily acquired a write lock due to a race. * caller may have unnecessarily acquired a write lock due to a race.
*/ */
if ((thflags & (TH_SYN | TH_FIN | TH_RST)) != 0 || if ((thflags & (TH_SYN | TH_FIN | TH_RST)) != 0 ||
Show All 12 Lines#ifdef INVARIANTS
} }
#endif #endif
} }
INP_WLOCK_ASSERT(tp->t_inpcb); INP_WLOCK_ASSERT(tp->t_inpcb);
KASSERT(tp->t_state > TCPS_LISTEN, ("%s: TCPS_LISTEN", KASSERT(tp->t_state > TCPS_LISTEN, ("%s: TCPS_LISTEN",
__func__)); __func__));
KASSERT(tp->t_state != TCPS_TIME_WAIT, ("%s: TCPS_TIME_WAIT", KASSERT(tp->t_state != TCPS_TIME_WAIT, ("%s: TCPS_TIME_WAIT",
__func__)); __func__));
if (thflags & TH_SYN && thflags & TH_FIN && V_drop_synfin) {
if ((s = tcp_log_addrs(inc, th, NULL, NULL))) {
log(LOG_DEBUG, "%s; %s: "
"SYN|FIN segment ignored (based on "
"sysctl setting)\n", s, __func__);
free(s, M_TCPLOG);
}
if (ti_locked == TI_RLOCKED) {
INP_INFO_RUNLOCK(&V_tcbinfo);
}
INP_WUNLOCK(tp->t_inpcb);
m_freem(m);
return;
}
tp->sackhint.last_sack_ack = 0;
/* /*
* Segment received on connection. * Segment received on connection.
* Reset idle time and keep-alive timer. * Reset idle time and keep-alive timer.
* XXX: This should be done after segment * XXX: This should be done after segment
* validation to ignore broken/spoofed segs. * validation to ignore broken/spoofed segs.
*/ */
tp->t_rcvtime = ticks; tp->t_rcvtime = ticks;
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